Unlocking the electrocatalytic activity of natural chalcopyrite using mechanochemistry

Chen, Z; Zheng, R; Wei, W; Wei, W; Ni, BJ; Chen, H

Unlocking the electrocatalytic activity of natural chalcopyrite using mechanochemistry

Chen, Z

Zheng, R Wei, W

Wei, W

Ni, BJ Chen, H

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Journal of Energy Chemistry, 2022, 68, pp. 275-283
Issue Date:: 2022-05-01

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Field	Value	Language
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Zheng, R
dc.contributor.author	Wei, W https://orcid.org/0000-0001-5613-337X
dc.contributor.author	Wei, W https://orcid.org/0000-0001-5613-337X
dc.contributor.author	Ni, BJ
dc.contributor.author	Chen, H
dc.date.accessioned	2023-02-06T02:40:52Z
dc.date.available	2023-02-06T02:40:52Z
dc.date.issued	2022-05-01
dc.identifier.citation	Journal of Energy Chemistry, 2022, 68, pp. 275-283
dc.identifier.issn	2095-4956
dc.identifier.uri	http://hdl.handle.net/10453/165929
dc.description.abstract	Manipulating the structure self-reconstruction of transition metal sulfide-based (pre)catalysts during the oxygen evolution reaction (OER) process is of great interest for developing cost-effective OER catalysts, which remains a central challenge. Here we realize a deep structure self-reconstruction of natural chalcopyrite to unlock its OER performance via mechanochemical activation. Compared with the manually milled counterpart (CuFeS2-HM), the mechanically milled catalyst (CuFeS2-BM) with a reduced crystallinity exhibits a 7.11 times higher OER activity at 1.53 V vs. RHE. In addition, the CuFeS2-BM requires a low overpotential of 243 mV for generating 10 mA cm−2 and exhibits good stability over 24 h. Further investigations suggest that the excellent OER performance of CuFeS2-BM mainly originates from the decreased crystallinity induced the in situ deep structure self-reconstruction of the originally sulfides into the electroactive and stable metal (oxy)hydroxide phase (e.g., α-FeOOH) via S etching under OER conditions. This study demonstrates that regulating the crystallinity of catalysts is a promising design strategy for developing highly efficient OER catalysts via managing the structure self-reconstruction process, which can be further extended to the design of efficient catalysts for other advanced energy conversion devices. In addition, this study unveils the great potentials of engineering abundant natural minerals as cost-effective catalysts for diverse applications.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	http://purl.org/au-research/grants/arc/FT160100195
dc.relation.ispartof	Journal of Energy Chemistry
dc.relation.isbasedon	10.1016/j.jechem.2021.11.005
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0305 Organic Chemistry
dc.subject.classification	Physical Chemistry
dc.title	Unlocking the electrocatalytic activity of natural chalcopyrite using mechanochemistry
dc.type	Journal Article
utslib.citation.volume	68
utslib.for	0305 Organic Chemistry
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2023-02-06T02:40:18Z
pubs.publication-status	Published
pubs.volume	68

Abstract:

Manipulating the structure self-reconstruction of transition metal sulfide-based (pre)catalysts during the oxygen evolution reaction (OER) process is of great interest for developing cost-effective OER catalysts, which remains a central challenge. Here we realize a deep structure self-reconstruction of natural chalcopyrite to unlock its OER performance via mechanochemical activation. Compared with the manually milled counterpart (CuFeS2-HM), the mechanically milled catalyst (CuFeS2-BM) with a reduced crystallinity exhibits a 7.11 times higher OER activity at 1.53 V vs. RHE. In addition, the CuFeS2-BM requires a low overpotential of 243 mV for generating 10 mA cm−2 and exhibits good stability over 24 h. Further investigations suggest that the excellent OER performance of CuFeS2-BM mainly originates from the decreased crystallinity induced the in situ deep structure self-reconstruction of the originally sulfides into the electroactive and stable metal (oxy)hydroxide phase (e.g., α-FeOOH) via S etching under OER conditions. This study demonstrates that regulating the crystallinity of catalysts is a promising design strategy for developing highly efficient OER catalysts via managing the structure self-reconstruction process, which can be further extended to the design of efficient catalysts for other advanced energy conversion devices. In addition, this study unveils the great potentials of engineering abundant natural minerals as cost-effective catalysts for diverse applications.

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http://hdl.handle.net/10453/165929